Abaixo está uma instrução que descreve uma tarefa de geração de SQL, combinada com uma entrada que fornece mais contexto sobre os esquemas de tabela disponíveis. Escreva o código SQL que responda adequadamente à solicitação
 ###Instrução: Qual é a escolha total com Bill Duffy?
 ###Tabelas: CREATE TABLE most_wickets_in_the_tournament (most_wickets_in_the_tournament_id AUTO_INCREMENT PRIMARY KEY, Player VARCHAR, Overs VARCHAR, Runs VARCHAR, Wkts VARCHAR, Mdns VARCHAR, Econ VARCHAR) CREATE TABLE singles:_26_16_titles_10_runners-up (singles:_26_16_titles_10_runners-up_id AUTO_INCREMENT PRIMARY KEY, Outcome VARCHAR, Year INT, Championship VARCHAR, Surface VARCHAR, Opponent in the final VARCHAR, Score in the final VARCHAR) CREATE TABLE draft_picks (draft_picks_id AUTO_INCREMENT PRIMARY KEY, Round INT, Pick INT, Player VARCHAR, Nationality VARCHAR, School/Club Team VARCHAR) CREATE TABLE series_4:___1999 (series_4:___1999_id AUTO_INCREMENT PRIMARY KEY, Episode No. VARCHAR, Episode Title VARCHAR, UK Broadcast Date VARCHAR, Presenter VARCHAR, Details of Journey VARCHAR, Countries Visited VARCHAR) CREATE TABLE round_21 (round_21_id AUTO_INCREMENT PRIMARY KEY, Home team VARCHAR, Home team score VARCHAR, Away team VARCHAR, Away team score VARCHAR, Venue VARCHAR, Crowd INT, Date VARCHAR)  
SELECT SUM Pick FROM draft_picks WHERE Player = bill duffy